Norms-of reaction plots for PMM during different cadmium treatments (Control; Acute 10(30) three-day treatment with 10 and 30 μg Cd/g dry food; Chronic 10(30) cadmium treatment with 10 and 30 μg Cd/g dry food from hatching until sacrificing; Recovery 10(30) three-day recovery after chronic treatments at 10 and 30 μg Cd/g dry food. The response of a single egg mass is represented by one line.